Wheel.



H. A. GLASRUD & J. ANDERSON.

WHEEL. APPLICATION FILED AUG. 13, 1907.

914,942. Patented M21129, 1909.

4 SHEETS-SHEET l.

Fiq

H. A. GLASRUD & J. ANDERSON.

WHEEL.

APPLIOATION FILED AUG. 13, 1907.

Patented Mar. 9, 1909;

4 SHEETS SHEET 2.

H. A. GLASRUD & J. ANDERSON.

' WHEEL.

APPLIOATION FILED AUG.13,1907.

4 SHEBT8-SBEEET 3.

Patented M21119, 1909.

H. A. GLASRUD & J. ANDERSON.

WHEEL. .APPLIU.ATION FILED AUG.13,1907.

Patented Mar. 9, 1909. mums-sum 4.

uwanlior o was Ncmms ps-rsns cm, WA

HENRY A. GLASRUD AND JOHANES ANDERSON, OF HATTON, N

UNITED STATES PATENT OFFICE.

ASSIGNOR TO OSCAR T. PETTERSON, OF NORTHWOOD, NORTH DAKOTA.

-WHEEL.

Application filed August 13, 1907.

To all whom it may concern:

Be it known that we, HENRY A. GLASRUD and Jonnnns ANDERSON, citizens ofthe United States, residing at Hatton, in the county of Traill, State ofNorth Dakota, have invented certain new and useful Improvements inIVheels and we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to vehicle wheels and more particularly to thatclass of wheels which are designed principally for use upon automobiles.

More specifically stated, the invention is a spring wheel and we have inview the provision of a wheel of this class which, while it embodies allof the advantages of a pneumatic tire wheel and all the resiliency andcushion eli'ect apparent therein, will not pre sent the samedisadvantages to be found in rubber tire wheels.

In carrying out our invention we provide a wheel of this class having aninner and an outer rim between which are interposed spring devices whichcooperate to render the wheel suitably yieldable but at the same timeprevent any rotation of one rim with respect to the other such as isapparent in wheels or" this class which employ but a single set ofspring devices.

In the accompanying drawings, Figure 1 is a side elevation of a wheelconstructed in accordance with our invention, Fig. 2 is a similar viewbut with the inner side of the wheel casing removed and showing theposition assumed by the several elements at a time when there is noweight upon the wheel, Fig. 3 is a view similar to Fig. 2 but showingthe positions of the several elements when a weight is supported by thewheel, Fig. 4 is a vertical longitudinal sectional view through thewheel, parts being in the position shown in Fig. 2, Fig. 5 is a similarView but of only a portion of the wheel showing the relative positionsof the elements of the correlated spring devices of the Wheel under theconditions named in the descri tion of Fig. 3, Fig. 6 is a verticalsectional view in detail taken axially through a portion of the wheel,Fig. 7 is a similar view but taken in a plane through one of thecylinders, and, Fig 8 is a detail pers ective view of one of'the linksto which the cat springs are connected.

Specification of Letters Patent.

Patented March 9, 1909.

Serial No. 388,364.

In the drawings the wheel is shown as comprising outer rim 10 and aninner rim 11, these rims being normally concentrically arranged withrespect to each other. Spokes 12 radiate from a head 13 and are securedat their outer ends to the inner rim 11. Formed at each edge of theouter rim 10 and extending inwardly at right angles to the said rim arepairs of ears 14 to which are bolted or otherwise secured annularflanges 15, there being two such flanges one at each side of the wheel.Similar flanges 16 are secured one at each side of the inner rim 11 bymeans of bolts 17 which are engaged through the said flanges 16 andthrough ears 18 formed integral with and extending outwardly andradially from the sides of the inner rim 11. The said flanges upon theouter rim are slidably received between the flanges 16 upon the innerrim and it will be observed. in elfect a wheel having relatively lovablesections is provided.

Formed at equidistant points upon the inner periphery of the outer rim10 are pintle lugs 19 and these lugs are received between ears 20 formedat the outer ends of inks 21, there being a bolt enga ed through theears of each link and throng 1 the pintle lug and threaded at one of itsends for threaded engagement in one of the ears whereby it will be heldagainst accidental displacement. Pivoted in a similar manner at theirends to airs of links are leaf springs 22 and these eaf springs aresecured at their middles to U-shaped brackets 23 which brackets areriveted or otherwise secured to the inner rim 11 of the wheel.

It will be understood from the foregoing description that as the wheelrotates, the weight supported thereby will tend to flatten out the.lowersprings and vary the arc of curvature of the other springs, the wheelrims at this time being eccentric to each other. It is evident howeverthat these springs alone will not prove satisfactory for the reason thatas the links are hinged, there would be nothing to prevent turningmovement of the two rims and I have therefore provided a means foraccomplishing this result which means will now be described.

Secured at their outer ends to the inner periphery of the outer rim 10of the wheel intermediate the adjacent links of each two pairs is a pairof cylinders 24. Each of these cylinders is provided at opposite sideswith ORTH DAKOTA; SAID GLASRUD slots 25 and fingers 26 are formed uponthe outer face of each link and project through the slots of theadjacent cylinder. The inner end of each of the cylinders is closed asat 27 l and arranged within each of the cylinders is a pair of springs28 between the opposing ends of which the ends of the correspondingfingers 26 are received.

As is clearly shown in Figs. 3 and 5 of the drawings, when the wheel isin such position that one of the springs 22 is at the bottom this springwill be flattened out to a certain degree and the spring at the top ofthe wheel or rather at a point diametrically opposite to the springfirst mentioned will be curved to a greater degree than normally, thesprings intermediate these two springs having their arcs varied to agreater or less degree. As each of the springs 22 is flattened out, thelinks which the spring connects will be swung I in op osite directionsand from each other and t is fingers carried thereby will be movedoutwardly against the tension of the outer springs 28 within theadjacent cylinders. The springs 22 next adjacent the spring which isflattened out will be bent from their normal position and the fingersupon the links of these last mentioned springs nearer the firstmentioned springs will be swung in a direction corresponding to thedirection of movement of the fingers upon the first mentioned linkswhereas the fingers upon the other links of the last mentioned springswill be moved in an opposite direction and against the tension of theinner springs of the corresponding cylinders.

From the foregoing description of our invention it will be observed thatthe springs 22 serve to yieldingly hold the two rims of the wheel inconcentric relation and that the springs 28 within the cylinderscooperate with the fingers upon the links to arrest any i tendencytoward relative rotation of the rims and to a certain degree cooperatein the production of the result designed to be attained by the springs22.

hat is claimed, is

1. A wheel of the class described, comprising an outer and an inner rim,flanges secured at the sides of the two rims, the flanges upon one runbeing received between those of the other rim, links hinged to the innerperiphery of the outer rim, leaf springs secured at their ends to theinner or free ends of the links, the

said springs being secured at their middles to the inner rim, fingersformed upon the links, and opposed compressible springs between whichthe ends of the fingers are received.

2. A wheel of the class described comprising an outer and an inner rim,flanges secured at the sides of the two rims, the flanges upon one rimbeing received between those of the other rim, links hinged to the innerperiphery of the outer rim, leaf springs secured at their ends to theinner or free ends of the links, the said springs being secured at theirmiddles to the inner rim, fingers formed upon the links, cylinderscarried by the outer rim and projecting inwardly and radially therefrom,the said cylinders being slotted, and opposed springs located withineach of said cylinders, the fingers being projected at their endsbetween the said springs.

3. A. wheel of the class described comprising an outer and inner rim,links hinged to one of said rims, springs secured at their ends to thefree ends of the links, the said springs being secured at their middlesto the other rim, fingers projecting from said links and opposed springsarranged. to bear against said fingers and resist the movement of saidlinks.

4. A wheel of the class described comprising an outer and an inner rim,links hinged to the inner periphery of the outer rim, leaf springssecured at their ends to the inner or free ends of the links, the saidsprings being secured at their middles to the inner rim, fingers formedupon the links, and opposed compressible springs between which the endsof the fingers are received.

In testimony whereof, we aifix our signatures, in presence of twowitnesses. 'fi:

HENRY A. GLASRUD. JOHANES ANDERSON.

Witnesses A. HANSON, K. A. SASHER.

